diff --git a/CHANGELOG.md b/CHANGELOG.md
index f85297c23..7d2bbe6cc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -54,6 +54,7 @@
 - `ComponentBase.UseRepresentationInstances` - an option flag to make generating fitting models faster/smaller.
 - `ContentConfiguration.AllowRotatation`
 - `AdaptiveGrid.Clone`
+- `AdditionalProperties` to ContentConfiguration.
 
 ### Fixed
 
diff --git a/Elements.Components/src/SpaceConfiguration.cs b/Elements.Components/src/SpaceConfiguration.cs
index 6629d14ce..29ca8f048 100644
--- a/Elements.Components/src/SpaceConfiguration.cs
+++ b/Elements.Components/src/SpaceConfiguration.cs
@@ -21,6 +21,11 @@ public class SpaceConfiguration : Dictionary<string, ContentConfiguration>
     /// </summary>
     public class ContentConfiguration
     {
+        /// <summary>
+        /// A collection of additional properties.
+        /// </summary>
+        [Newtonsoft.Json.JsonExtensionData]
+        public IDictionary<string, object> AdditionalProperties { get; set; } = new Dictionary<string, object>();
 
         /// <summary>
         /// A rectangular boundary around this content configuration.
@@ -119,7 +124,7 @@ public ContentElement ContentElement
         public BoundaryDefinition CellBoundary { get; set; }
 
         /// <summary>
-        /// The individual content itmems in this configuration.
+        /// The individual content items in this configuration.
         /// </summary>
 
         public List<ContentItem> ContentItems { get; set; }
@@ -127,12 +132,12 @@ public ContentElement ContentElement
         /// <summary>
         /// The width of the configuration boundary.
         /// </summary>
-        public double Width => this.CellBoundary.Width;
+        public double Width => CellBoundary.Width;
 
         /// <summary>
         /// The depth of the configuration boundary.
         /// </summary>
-        public double Depth => this.CellBoundary.Depth;
+        public double Depth => CellBoundary.Depth;
 
         /// <summary>
         /// Allow rotation of the configuration
@@ -173,7 +178,7 @@ public static List<Vector3> AnchorsFromRect(Polygon polygon)
         /// </summary>
         public List<Vector3> Anchors()
         {
-            var baseRect = Polygon.Rectangle(this.CellBoundary.Min, this.CellBoundary.Max);
+            var baseRect = Polygon.Rectangle(CellBoundary.Min, CellBoundary.Max);
             var baseAnchors = AnchorsFromRect(baseRect);
             return baseAnchors;
         }